Eutrophication Criteria of Aegean Coasts, Türkiye

The aim of the study is to determine physico-chemical parameters and eutrophication criteria in the Aegean Sea. The pH, temperature, salinity, dissolved oxygen, turbidity, conductivity, phosphate, ammonium nitrogen, nitrite nitrogen, nitrate nitrogen and chlorophyll-a parameters were determined. The sampling was conducted at 25 stations (Enez, Saros Bay, Gökçeada, Yeniköy, Bozcaada, Babakale, Altınoluk, Ayvalık, Dikili, Çandarlı, Foça, Bostanlı, Urla, Ildır, Çeşme, Sığacık, Kuşadası, Didim, Güllük, Bodrum, Akyaka, Gökova, Datça, Bozburun 1, Bozburun 2) during the spring-summer-autumn seasons of 2022 and 2023. In the Aegean Sea, the mean values were determined as follows: pH 8.05, temperature 21.80 °C, dissolved oxygen 7.86 mg/L, salinity 34.13‰, turbidity 25.15 mg/L, electrical conductivity 50.27 µS/cm, phosphate 9.39 µg/L, ammonium nitrogen 29.59 µg/L, nitrite nitrogen 0.5 µg/L, nitrate nitrogen 1.9 µg/L, and chlorophyll-a 1.76 µg/L.